This Series is a robust and safe Three-Phase Dry-Type Isolation Transformer, purpose-engineered for industrial and mining power distribution systems. It provides essential galvanic isolation between primary and secondary circuits, effectively eliminating ground loops, suppressing electrical noise, and protecting sensitive downstream equipment from power line disturbances. Its flame-retardant, resin-encapsulated dry-type design ensures superior fire safety, minimal maintenance, and reliable operation in diverse indoor environments, making it the ideal choice for clean and secure power supply.
Product Features
• Enhanced Safety & Equipment Protection
Provides complete electrical isolation, preventing fault currents from propagating and shielding sensitive industrial controls, PLCs, and instrumentation from voltage surges, spikes, and common-mode noise on the main supply.
• Dry-Type Safety & Eco-Friendly
The air-cooled, resin-encapsulated construction contains no flammable liquids, eliminating the risk of fire, leakage, and environmental contamination. This allows for safe installation directly in electrical rooms close to the load.
• High Reliability & Low Maintenance
With no oil to monitor, filter, or replace, and with a solid insulation system resistant to moisture and contaminants, this transformer offers virtually maintenance-free operation and a long service life.
• Robust Industrial Design
Built with high-quality materials and a sturdy enclosure to withstand the vibrations, humidity, and temperature variations common in industrial and mining settings.
• Quiet Operation & Flexible Installation
Operates with low audible noise and generates less heat compared to some alternatives. Its compact footprint and dry-type nature provide greater flexibility in placement within a facility.
• Flexible Configuration
Available with off-circuit or on-load tap-changers, multiple vector groups (Yyn0, Dyn11, etc.), and suitable for both 50Hz and 60Hz systems, offering great adaptability to specific project requirements.
Specifications & Parameters
| Category | Specification / Description |
| Model Code | S G - [Rated Capacity (kVA)] / [High Voltage (kV)] Example: SG-800/10 (Three-Phase, Dry-Type, 800kVA, 10kV Primary) |
| Model Breakdown |
S: Three-Phase; G: Dry-Type (Air-Cooled); [kVA]: Rated Capacity; [kV]: Primary Voltage. |
| Primary Application | Power isolation, noise filtering, and voltage transformation in industrial plants, mining facilities, commercial buildings, and data centers. |
| Phase | Three-Phase |
| Insulation Type | Dry-Type, Resin-Encapsulated or Vacuum Pressure Impregnated (VPI) |
| Rated Capacity | Customizable, typical range from 100 kVA to 5000 kVA. |
| Voltage Ratings | High Voltage (HV) and Low Voltage (LV) are fully customizable per project requirement (e.g., 10kV/400V, 6.6kV/480V). |
| Vector Group | Customizable (e.g., Dyn11, Yyn0, etc.) as required by the system design. |
| Impedance Voltage | Designed per customer specification to achieve optimal balance between short-circuit current limitation and voltage regulation performance. |
| Insulation Class | Typically Class F (155°C) or Class H (180°C) standard. |
| Cooling Method | Air Natural (AN) or Air Forced (AF) with fans. |
| Protection Level (IP) | Standard IP20 (finger-safe), higher IP ratings available upon request. |
Packaging, Warranty & Certifications Packaging：
The transformer is securely mounted on a sturdy base frame, wrapped in protective, waterproof material, and placed in a robust wooden export crate. Internal bracing prevents movement during transit. All accessories are packed separately with clear labeling.
Warranty：
We offer a standard 12-month warranty from the date of successful commissioning or 18 months from the date of shipment, whichever occurs first. The warranty covers defects in materials and workmanship under normal operating conditions.
Certifications & Testing：
Our manufacturing quality system is certified. The product is designed, manufactured, and tested in full compliance with international standards such as IEC 60076-11 for dry-type transformers. Each unit undergoes comprehensive routine tests, including turns ratio, winding resistance, impedance voltage, no-load & load loss measurement, and dielectric withstand tests. Complete test reports are provided.
